1. NSRO Department University of Naples Federico II Napoli Italy
2. Centro Sclerosi Multipla ASSL Cagliari (ATS Sardegna); Dipartimento di Scienze Mediche e Sanità PubblicaUniversity of Cagliari Cagliari Italy
3. Multiple Sclerosis Center ASST della Valle OlonaHospital of Gallarate Gallarate Italy
4. University of Campania Luigi Vanvitelli Napoli Italy
5. University of Foggia Foggia Italy
6. Dipartimento di Scienze Cliniche e Biologiche University of Torino Torino Italy
7. Multiple Sclerosis Center ASST Spedali Civili di BresciaMontichiari Hospital Montichiari Italy
8. Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health and Center of Excellence for Biomedical Research (CEBR) and IRCCS San Martino‐IST University of Genova Genova Italy
9. SC Neurologia e Centro di Riferimento Regionale SM ‐ AOU S. Luigi Orbassano, Torino Italy
10. Neuro‐Immunology and Neuromuscolar Diseases Unit IRCCS Foundation Carlo Besta Neurological Institute Milano Italy
11. Clinical Unit of Neurology Department of Medicine Surgery and Health SciencesASUGIUniversity of Trieste Trieste Italy
12. MS Center City of Health & Science University Hospital Torino Italy
13. Multiple Sclerosis Center "A. Cardarelli" Hospital Naples Italy
14. Centro Sclerosi Multipla ASST Papa Giovanni XXIII Bergamo Italy
15. Neurology Department F. Tappeiner Hospital Meran (BZ) of Neurology Franz Tappeiner Hospital Merano Italy
16. Institute of Neurology Department of Medical and Surgical Sciences Magna Graecia University Catanzaro Italy
17. University of Campania “Luigi Vanvitelli” Napoli Italy
18. Department of Health Sciences (DISSAL) Section of Biostatistics University of Genova Genova Italy